[Sca-cooks] "Spontaneous" fermentation

[Dragon]

I've been having a run of weirdness in my refrigerator of late.

I generally buy a big jug of salsa and it lasts me a couple months in 
the refrigerator as I consume it on lots of different things. But the 
last three bottles I have bought I have been unable to finish. Not 
because I can't eat it, but because it starts fermenting within a 
couple of weeks of my opening a new one.

It bubbles quite vigorously and smells yeasty and alcoholic, so it 
has definitely been contaminated with yeast. Now what baffles me 
about all of this is how it is getting contaminated with yeast. I am 
careful to keep the neck of the bottle clean and I never put anything 
but a clean spoon in it to remove any from the jar. My refrigerator 
temperature is fine, I have a thermometer in there and check it 
regularly to be sure. Though to be honest, even the recommended 
refrigerator temperatures are not an impediment to yeast doing their 
thing slowly.

Since it has happened with the same brand three times, I am beginning 
to suspect that it isn't something I am doing. I am going to contact 
the manufacturer about this issue and will be buying a different 
brand next time I go to buy some.

I'm not going to mention what the brand is just yet, not until I talk 
to them about it. But I will say it is a nationally distributed one. 
But if anyone has seen the same thing recently, I would be interested 
in hearing about it.

Dragon

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  Venimus, Saltavimus, Bibimus (et naribus canium capti sumus)
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